Perhaps you should try some spelling variations:
"phat trien van khieu cua ban than." » "phat trien ben khieu cua ban than." (Expand Search), "phat trien van kieu cua ban than." (Expand Search), "phat trien van hieu cua ban than." (Expand Search), "phat trien van khiem cua ban than." (Expand Search), "phat trien van thieu cua ban than." (Expand Search), "phat trien van khieu cua ban thanh." (Expand Search), "phat trien van khieu cua ban thao." (Expand Search), "phat trien van khieu cua van thang." (Expand Search), "phat trien van khieu cua dan than." (Expand Search), "phat trien van khieu cua can than." (Expand Search), "phat trien van khieu cua dang than." (Expand Search)
"phat trien van chieu cua bao than." » "phat trien ben chieu cua bao than." (Expand Search), "phat trien van chien cua bao than." (Expand Search), "phat trien van hieu cua bao than." (Expand Search), "phat trien va chieu cua bao than." (Expand Search), "phat trien van thieu cua bao than." (Expand Search), "phat trien van chieu mua bao than." (Expand Search), "phat trien van chieu cua bao thanh." (Expand Search), "phat trien van chieu cua bao thang." (Expand Search), "phat trien van chieu cua bao nhan." (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("phat trien van khieu cua ban than.") OR ("phat trien van chieu cua bao than."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"phat trien van khieu cua ban than.\") OR (\"phat trien van chieu cua bao than.\"))".
• Removing quotes may allow a broader search: (( phat trien van khieu cua ban than. ) OR ( phat trien van chieu cua bao than. )).
• Adding a wildcard symbol may retrieve word variants: (("phat trien van khieu cua ban than.") OR ("phat trien van chieu cua bao than."))*.